Automatic shaper guard



1941- c. J. SIEGEL 2,257,984

AUTOMATIC VSHAPER GUARD Filed Feb. 4, 1941 2 Sheets-Sheet 1 Inventor K/Qi'h j/eye/ B @Mm A iiorne Oct. 7, 1941 c. J. SIEGEL AUTOMATIC SHAPER GUARD Filed Feb. 4, 1941 2 Sheets-Sheet 2 a 2 Mu way x. mm 4 z a f a,

A itomey Patented Oct. 7, 1941 UNITED STATES PATENT OFFICE- Clarence J. Siege], Grand Rapids, Mich.

Application February 4, 1941, Serial No. 377,387

1 Claim.

This invention relates to new and useful improvements in safety appliances for shaper machines and more particularly to an automatic guard.

The principal object of the present invention is to provide a guard for Wood shaper machines and the like wherein shaper elements are employed and sometimes because of defects cause injury to workmen.

Another important object of the invention is to provide a machine guard of the character stated which will ride work fed to the machine and which will move to a protecting position when the work has been removed from the machine.

Other important objects and advantages of the invention will become apparent to the reader of the following specification.

In the drawings:

Figure 1 represents a fragmentary side elevational view showing one form of guard in vertical section.

Figure 2 is a fragmentary front elevational view.

Figure 3 is a fragmentary horizontal sectional view taken substantially on the line 3-3 of Figure 1.

Figure 4 is a fragmentary side elevational View showing a modified form of the invention in vertical section.

Figure 5 is a fragmentary front elevational view of the form of the invention hown in Figure 4.

Figure 6 is a fragmentary horizontalsectional view taken substantially on the line 66 of Figure 5.

Referring to the drawings wherein like numerals designate like parts, it can be seen in Figure 1, that numeral 5 generally refers to a shaper machine, this view disclosing a table 5, a shaper tool I, and on this table 6 is shown a unit of work 8 upon which a form 9 is secured.

Numeral It) generally refers to one form of the present invention. Numeral ll denotes a bar in spaced relation to the top of the table 6 and extending inwardly from the front side of this bar II is a pocket l2 in which a segmental gear I3 is mounted on a pin It.

At the front side of the bar H is an angularly shaped plate I 5 having the vertical portion thereof disposed against the front side of the bar II and secured in place by screws l6, while its horizontal portion is disposed against the top of the bar I l and can be secured in place by screws opening therein through which a stem I8 is slidable, this stem being provided with a head l9 at its upper end. The lower end of this stem l8 has a laterally disposed end portion 20 extending through an opening in the segmental gear l3 and a pin or suitable keeper 2| prevents displacement of this end portion 20 from the gear I3.

Numeral 22 denotes a guard block secured to one side of a plate 23. The upper portion of this plate 23 is provided with a hinge barrel 24 which is alignable with hinge barrel 25, 25 on the lower end of the plate l5. A hinge pin- 26 is disposed through the barrels 24 and 25 and as shown in Figure 2, th barrel 24 is divided into a pair of sections spaced apart to accommodate a gear 21 which is secured to the hinge pin 26 and the hinge pin 26 is in turn positively secured to the sections of the barrel 24. As can be seen in Figure 1, the segmental gear I3 meshes with the gear 21, so that when the stem I8 is forced downwardly, the guard block 22 will be moved to the dotted lin position shown in Figure 1, to the end that the work can be slid under the guard to the shaper tool 1 and as the work is held against the tool and shaped, the guard block 22 simply rides the work.

As shown in Figur 1, a plate 28 extends from the bar I l and is supported between collars 29 on the shank 30 of the shaper. A threaded stud 30 3| rises from the bar II and through an opening in the plate 28 and a wing nut 32 is provided on this stud to hold the plate 28 firmly against the bar H.

A modification of the invention shown in Figure 4, wherein a plate 28a is supported in the manner of the plate 28 and is secured by a threaded stud 3la and winged nut 32a to a bar Ila. To the forward side of this bar Ha. is se-v cured a plate 33, vertically along which extends a barrel 34 having a plunger 35 vertically movable therethrough. This plunger 35 has a knob or head 36 at the upper end thereof; A flange 31 is provided at the upper end of the plate 33 and has screws 38 disposed through openings therein and driven into the bar Ha.

Obviously, when the shaper la is to be used, the plunger 35 is elevated, the Work 8a and form 9a moved under the same to engag the shaper 111, after which the plunger 35 is allowed to settle on the form So and there it rides until the work is. removed, when it automatically descends and serves as a guard.

While the foregoing specification sets forth the invention in specific terms, it is to be understood H. The upper portion of the plate l5 has an that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention as claimed hereinafter.

Having described the invention, claimed as new is:

A guard of the character described comprising a support, a vertically movable guard element on the support, said guard element being adapted to ride work disposed under the same, said vertiwhat is cally movable guard element consisting of a hinged block, a gear carried by the hinged block, a segmental gear meshing with the first-mentioned gear, a slide pin mounted on the support and having a portion extending exteriorly of the support, said pin being connected with the segmental gear to operate the segmental gear when the pin is reciprocated.

CLARENCE J. SIEGEL. 

